期刊
MICROSCOPY AND MICROANALYSIS
卷 20, 期 2, 页码 425-436出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1431927614000294
关键词
liquid cell TEM; nucleation; oriented attachment; crystal growth
资金
- US Department of Energy Office of Science, Office of Basic Energy Sciences [DE-AC02-05CH11231]
- US Department of Energy Office of Science, Office of Basic Energy Sciences
- National Science Foundation [DMR-1312697, CHE-1213835]
- DoD, Air Force Office of Scientific Research, National Defense Science and Engineering Graduate (NDSEG) Fellowship [32 CFR 168a]
- Foundation Pierre-Gilles de Gennes in Paris, France
- Danish Council for Independent Research
- US Department of Energy [DE-AC02-05CH11231]
- Direct For Mathematical & Physical Scien [1312697] Funding Source: National Science Foundation
- Division Of Materials Research [1312697] Funding Source: National Science Foundation
Recent ex situ observations of crystallization in both natural and synthetic systems indicate that the classical models of nucleation and growth are inaccurate. However, in situ observations that can provide direct evidence for alternative models have been lacking due to the limited temporal and spatial resolution of experimental techniques that can observe dynamic processes in a bulk solution. Here we report results from liquid cell transmission electron microscopy studies of nucleation and growth of Au, CaCO3, and iron oxide nanoparticles. We show how these in situ data can be used to obtain direct evidence for the mechanisms underlying nanoparticle crystallization as well as dynamic information that provide constraints on important energetic parameters not available through ex situ methods.
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